Reply to lost some screws of my VCI-100

hey guys, i guess the title tells it all at my last gig i had a problem with my left jog wheel. i was very nervous and opened the case 20 min before i had to start to play in front of a few hundred people. in this stressful situation i somehow managed to loose all 5 screws of the back cover as well as 1 screw of the left jog-wheel plate. i put them aside in a cup and somehow over the next hours they got lost/stolen whatever. i am actually ashamed to tell you this stupid story but i need this screws and wanted to ask if someone knows where i can get them. the next problem is that i'm in austria (europe) so tipps about stores in the U.S. won't help me. i HOPE that the screws are some standardized ones (at least for the case).